Last Retort

A negative outlook

24 April 2015 Last Retort

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Could the Shroud of Turin’s mysterious negative imprints have a chemical cause?


Flashback

30 years ago: wartime degrees

24 April 2015 Flashback

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How prisoners during the Second World War were able to study for chemistry degrees

Puzzles

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Download the April set of puzzles

The winners of this month's puzzles will be published next month. For a chance to win a £25 book voucher please send your completed puzzles by 15 April.

Chemistry World Puzzle Answers
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